1386 Calendar - What Happened Today In History July 9, 1386 – The Old Swiss Confederacy makes great strides in establishing control over its territory by soundly defeating the Archduchy of Austria in the Battle of Sempach
BrainyHistory - Events Listing 1386 in History February 15 Duke Philip the Stout forms Council of Flanders May 9 Treaty of Windsor between Portugal-England July 9 Battle at Sempach: Swiss beat duke Leopold III of Austria
Treaty of Windsor 1386 - Historic UK On 9th May 1386 the diplomatic alliance between Portugal and England was ratified by the Treaty of Windsor The oldest peace treaty in Europe was finalised through the marriage of King John I of Portugal to Philippa of Lancaster